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Finding the Fourth Proportional to 7,580.88, 10,455.96 and 6,731.16

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Solution

The fourth proportional to 7,580.88, 10,455.96 and 6,731.16 is: 9,283.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,580.88 : 10,455.96 = 6,731.16 : x
  2. Step 2: Convert to fraction form
    7,580.88/10,455.96 = 6,731.16/x
  3. Step 3: Cross multiply
    7,580.88x = 10,455.96 × 6,731.16
  4. Step 4: Simplify right side
    7,580.88x = 70,380,739.71
  5. Step 5: Solve for x
    x = 70,380,739.71/7,580.88
  6. Step 6: Final answer
    x = 9,283.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.